"We obtained 2x600 sec spectra of GRB 060218 / SN 2006aj (GCN 4775) on 20060726 UT, 153 rest-frame days past the GRB trigger, with Keck I (+ LRIS). The spectrum shows prominent nebular emission lines attributed to [O I] 6300, 6364, Na D, and the Ca II IR triplet. The spectrum resembles the nebular spectrum of GRB 980425 / SN 1998bw at a similar epoch. With a redshift of z = 0.033 (Mirabal...Full Text

We observed the afterglow of GRB 060218 (SN 2006aj) six months after the burst. Observations were made with the 2m RCC telescope at the National Astronomical Observatory Rozhen (Bulgaria) on July 24 (UT=01h). The calibration was made using comparison stars from Hicken et al. (GCN 4898) and Modjaz et al. (astro-ph/0603377). Observations were made under good atmospheric conditions, but through...Full Text

We observed the afterglow of GRB 060218 (Cusumano et al., GCN 4775; Marshall et al., GCN 4800) with the 2m RCC telescope at the National Astronomical Observatory Rozhen (Bulgaria) on Mar. 21 and 26. The calibration was made using comparison stars from Hicken et al. (GCN 4898) and Modjaz et al. (astro-ph/0603377). Observations were made under good atmospheric conditions through a standard...Full Text

We observed the OT of GRB 060218/SN 2006aj (Cusumano et al. GCN 4775) in the V and R bands with the 152 cm Loiano telescope equipped with the BFOSC camera system. Observations were carried out on 2006 Mar 7 and 11 under poor observing conditions (seeing=2.7-3.2 arcsec). Using the comparison stars reported by Hicken et al. (GCN 4898), we find the following magnitudes, in agreement with...Full Text

We have observed GRB 060218/SN 2006aj (Cusumano et al. GCN 4775) with Maidanak 1.5m telescope in BVR on Feb.27, Mar.08, and in BR bands with NOT/StanCam on Mar.15. The following photometry is based on Modjaz, et. al. (2006, astro-ph/0603377) calibration and the same reference stars in each epochs: ...Full Text

We obtained optical imaging of GRB 060218/SN 2006aj (Cusumano et al., GCN 4775) on 2006/March 3.958 (UT) using the IAG-USP 60cm telescope at the Laboratório Nacional de Astrofísica (LNA), Brazil. The observation was made under poor sky conditions and through high airmass (>2). A 90-second exposure in the I filter yielded I = (17.06 +/- 0.10) mag. The zero point calibration was obtained...Full Text

The CFA Supernova Group obtained UBVRr'i' photometry of 9 comparison stars in the field of GRB 060218/SN2006aj on March 4, 2006 UT. Data was taken using the FLWO 1.2m telescope at Mt. Hopkins, Arizona. We present our V-band light curve in Modjaz, et. al. (2006), astro-ph/0603377, submitted to ApJL. A finding chart, coordinates and photometry can be found at the following website:...Full Text

We have imaged the field of GRB 060218 (GCN 4775, GCN 4776) beginning approximately 4 days after the trigger notice with the SARA 0.9-m at Kitt Peak, under good weather conditions. We obtained 9 300-seconds exposures in V filter and 7 300-second exposures in B filter. We detect the supernova in each exposure and have carried out the following data analysis:...Full Text

ESO's VLT-Kueyen (UT 2) observed SN 2006aj (GRB 060218) around the time of maximum light on March 3/4, 2006. Observations were performed using the Ultraviolet and Visual Echelle Spectrograph (UVES) at a spectral resolution of 46 000. The signal-to-noise ratio of the spectrum (2100 sec exposure time) is about 30 per resolution element, which is sufficient to measure the equivalent width (EW)...Full Text

We have analyzed the XMM-Newton observation of the field of GRB 060218, discovered by Swift/BAT on 2006, February 18 at 03:34:30 UT (GCN 4775, Cusumano et al.)...Full Text

We observed GRB 060218/SN 2006aj (Cusumano et al., GCN 4775) with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey) over 3 nights in BVRI. The magnitudes of the object are: ...Full Text

"Based on the photon index measured by Swift/BAT (2.5+/-0.1 in 15-150 keV, Sakamoto et al., GCN 4822) and Swift/XRT during the prompt emission (1.82+/-0.01 in 0.2-10 keV, Cusumano et al., GCN 4786), it can be inferred that the intrinsic peak energy Ep,i of GRB 060218/SN2006aj (at the suggested redshift z=0.03) is < 10 keV and lies probably towards the low energy bound of XRT (i.e....Full Text

We have observed filed of GRB 060218 (sn 2006aj) for 133 min during night 24./25.2.2006 with the 40cmreflector at N. Copernicus Observatory equipped with ST-7 CCD (R band filter) camera. we have detected source as R aprox. 18mag close to the limit of the combined dframe beacuse of very bad weather conditions (high altitude clouds, wind). More precise photometry may be available in future...Full Text

We observed GRB 060218/SN 2006aj (Cusumano et al. GCN 4775) in V-band with the 60 cm telescope of peak Terskol observatory on Feb. 22 and Feb. 23. A series of 60 s exposures were taken in both epochs....Full Text

We observed GRB 060218/SN 2006aj (Cusumano et al. GCN 4775) with CrAO Shajn 2.6m telescope on Feb. 23. A series of BVRI 30 s exposures were taken starting (UT) 19:27....Full Text

The date of GMRT observation of GRB 060218 reported in GCN 4832 has a typo. The correct date of observation was 21 Feb 2006 and not 20 Feb 2006....Full Text

"We imaged the field of GRB 060218 (Cusumano et al., GCN 4775, GCN 4781) with the K-380 Cassegrain telescope of the Crimean Astrophysical Observatory. Observations of the afterglow have been carried out on 2006 Feb 20 - Feb 23. A series of 2-minute exposures in R(Johnson) band were acquired. Calibration was based on the SDSS catalog. On Feb 20 19:18 - 20:00 UT for 20 combined images...Full Text

Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging of the position of GRB 060218/SN 2006aj (GCN 4775, Cusumano et al.) over 5 nights. Total summed exposure time on each night amounted to 36 minutes in I and 30 minutes in J....Full Text

We imaged GRB 060218 with 70-cm telescope of Crimean Astrophysical observatory (Ukraine) and ST-7 camera of St.Petersburg University in photometric and polarimetric mode. Observations were made in R band from February 20.17 to February 23.18. The rate of brightening in this period was 0.18 mag/day. The polarization reached maximum of 6% on February 21 and decreased to 3% on February 23. The...Full Text

"We observed GRB 060218/SN 2006aj (Cusumano et al., GCN 4775) with the amateur 0.25m ABT telescope, from Alkmaar, The Netherlands, under moderate observing conditions. Starting from Feb 24 17:58 UT, a series of 1 minute exposures in V band were acquired, ending at 18:38 UT. 28 exposures were combined. The object is detected and we measure V = 17.37 +/- 0.21, using SDSS g' and r' data from...Full Text